Laptop battery for ACER UM09A31 UM09A41 UM09A71 UM09A73 AO751h Battery Type: Replacement Li-ion Battery (Brand New) Voltage: 11.1V l Capacity: 4400mAh Made with the highest quality cell l CE FCC RoHS Certificates Warranty:14 months warranty (except manmade damaged),30 days money back Fit model:Acer Aspire One 751h Series,Aspire One 531 Series,Aspire One 531h Series,Aspire One 751 Series